79 lines
1.7 KiB
Bash
79 lines
1.7 KiB
Bash
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#!/bin/sh
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#
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# This script generates a "memstick image" (image that can be copied to a
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# USB memory stick) from a directory tree. Note that the script does not
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# clean up after itself very well for error conditions on purpose so the
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# problem can be diagnosed (full filesystem most likely but ...).
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#
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# Usage: make-memstick.sh <directory tree> <image filename>
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#
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# $FreeBSD$
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#
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PATH=/bin:/usr/bin:/sbin:/usr/sbin
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export PATH
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BLOCKSIZE=10240
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if [ $# -ne 2 ]; then
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echo "make-memstick.sh /path/to/directory /path/to/image/file"
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exit 1
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fi
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tempfile="${2}.$$"
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if [ ! -d ${1} ]; then
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echo "${1} must be a directory"
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exit 1
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fi
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if [ -e ${2} ]; then
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echo "won't overwrite ${2}"
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exit 1
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fi
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echo '/dev/da0s3 / ufs rw,noatime 1 1' > ${1}/etc/fstab
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rm -f ${tempfile}
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makefs -B big ${tempfile} ${1}
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if [ $? -ne 0 ]; then
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echo "makefs failed"
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exit 1
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fi
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rm ${1}/etc/fstab
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#
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# Use $BLOCKSIZE for transfers to improve efficiency. When calculating
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# how many blocks to transfer "+ 2" is to account for truncation in the
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# division and to provide space for the label.
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#
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filesize=`stat -f "%z" ${tempfile}`
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blocks=$(($filesize / ${BLOCKSIZE} + 1728))
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dd if=/dev/zero of=${2} bs=${BLOCKSIZE} count=${blocks}
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if [ $? -ne 0 ]; then
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echo "creation of image file failed"
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exit 1
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fi
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unit=`mdconfig -a -t vnode -f ${2}`
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if [ $? -ne 0 ]; then
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echo "mdconfig failed"
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exit 1
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fi
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gpart create -s APM ${unit}
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gpart add -t freebsd-boot -s 800K ${unit}
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gpart bootcode -p ${1}/boot/boot1.hfs -i 1 ${unit}
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gpart add -t freebsd-ufs -l FreeBSD_Install ${unit}
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dd if=${tempfile} of=/dev/${unit}s3 bs=$BLOCKSIZE conv=sync
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if [ $? -ne 0 ]; then
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echo "copying filesystem into image file failed"
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exit 1
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fi
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mdconfig -d -u ${unit}
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rm -f ${tempfile}
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